Some "Dynomite" Heads! - Page 6 - ZR-1 Net Registry Forums

XfireZ51 · 02-25-2011

Quote:

Originally Posted by Pete

The exhaust cams are worth about 5 hp.
With intakes alone you will see 15-20 add exhaust will 25.

Pete

Pete,

So intakes alone add 20+, if including exhaust cams then it's a total of 25, correct?

Pete · 02-25-2011

Quote:

Originally Posted by XfireZ51

Pete,

So intakes alone add 20+, if including exhaust cams then it's a total of 25, correct?

Just intakes 15-20,i saw these #'s with my set up.

Pete

Locobob · 03-05-2011

Decided to take a few hours and finish up the port work on the intake so I can send it off to powder. I went a little bigger than usual on this intake since the ported heads will be able to take advantage of some extra flow. Here are a few pics:

Airhorn

Plenum

Injector housings

Secondary runner

Primary runner

sammy · 03-05-2011

i will say it again ,one can really tell you care alot how the finished product comes out ,just an awsome job

A26B · 03-05-2011

Robert, that is one beautiful job......and I ain't just sayn' that either, I darn sure mean it. Just excellent, truly excellent.

tomtom72 · 03-06-2011

Bob, man that package is a work of art!

RICKYRJ1 · 03-06-2011

Quote:

Originally Posted by tomtom72

=D>

Bob, man that package is a work of art!

I agree Great job!

Jagdpanzer · 03-06-2011

Excellent craftmanship Bob!
How do you go about achieveing the surface finish of the ports and flanges shown in the photos?

Locobob · 03-11-2011

Quote:

Originally Posted by Jagdpanzer

Excellent craftmanship Bob!
How do you go about achieveing the surface finish of the ports and flanges shown in the photos?

Here are some of the flap wheels I use for the final finish - they are all 60 grit. The big one is 1.5in and requires some trimming before it fits in the port, usually I work it on the air horn or inside the plenum to get it down to size.
I get most of my stuff from Precision Abrasives.

Oops! Guess I will need a new one of these.

LGAFF · 03-11-2011

Oops! Guess I will need a new one of these.

[/QUOTE]

I will give away my one and only secret porting tip....I don't trim the 1.5". I spray it in alittle WD40 put it in the opening of the port and spin it up slowly, and you end up with perfectly round ports.(At the gasket surface)

PS: Cams should be complete next week sometime

03-05-2011	#53
Locobob Join Date: Jan 2004 Location: Portland, OR Posts: 1,057	Re: Some "Dynomite" Heads! Decided to take a few hours and finish up the port work on the intake so I can send it off to powder. I went a little bigger than usual on this intake since the ported heads will be able to take advantage of some extra flow. Here are a few pics: Airhorn Plenum Injector housings Secondary runner Primary runner __________________ Robert ZR-1 Net Registry Oregon State Director 91 ZR-1 #431 Black/Black LPE 368

03-05-2011	#54
sammy Join Date: Jun 2010 Location: back in lone pine Posts: 591	Re: Some "Dynomite" Heads! i will say it again ,one can really tell you care alot how the finished product comes out ,just an awsome job

03-05-2011	#55
A26B Join Date: Dec 2003 Location: Arcadia,OK Posts: 3,394	Re: Some "Dynomite" Heads! Robert, that is one beautiful job......and I ain't just sayn' that either, I darn sure mean it. Just excellent, truly excellent. __________________ Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 *ZR-1*, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed.

03-06-2011	#56
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,645	Re: Some "Dynomite" Heads! Bob, man that package is a work of art! __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member

03-06-2011	#58
Jagdpanzer Join Date: Apr 2007 Location: Northern VA Posts: 2,661	Re: Some "Dynomite" Heads! Excellent craftmanship Bob! How do you go about achieveing the surface finish of the ports and flanges shown in the photos? __________________ Phil Wasinger 1994 Torch Red ZR-1 WAZOO Member George Braml Intake

03-11-2011	#60
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,194	Re: Some "Dynomite" Heads! Oops! Guess I will need a new one of these. [/QUOTE] I will give away my one and only secret porting tip....I don't trim the 1.5". I spray it in alittle WD40 put it in the opening of the port and spin it up slowly, and you end up with perfectly round ports.(At the gasket surface) PS: Cams should be complete next week sometime __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 Last edited by LGAFF; 03-11-2011 at 06:42 PM.